DON'T LOOK ANY FURTHER:
This room is UNBELIEVABLY clean, and in such a good condition, I'm a bit of a hygiene freak myself, and I felt super comfortable here. The room offers an AC and a Fan on the ceiling so you can have any combo you want. The (bath)room is also very spacious and bright, it reminded me of an IKEA showroom for some reason, maybe Frank just has a good sense of style? For this price, you're practically stealing it from him. The location is also very central, close to a BTS station and many small food stalls, massage salons and anything BKK has to offer. Frank responds quickly and truly cares for his guests, he is a native English speaker, so don't even worry about communication.
I would 200% stay here again.
Thanks again for everything Frank!